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VALAWAK <br /> December 16, 1992 Working To Restore Nature <br /> Unocal Service Station No 6981, Stockton, California <br /> TABLE 6 <br /> HYDROCARBON CONCENTRATIONS IN <br /> SOIL SAMPLES FROM BORINGS <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> (page 1 of 3) <br /> Sample Ethyl- Total <br /> Number Date TPHg Benzene Toluene benzene Xylenes <br /> S-25-B1 01/31/90 <20 <0 050 013 <0 050 <0 050 <br /> S-45-B1 01/31/90 <20 <0 050 <0 050 <0 050 <0 050 <br /> S-25-132 02/01/90 810 077 46 16 140 <br /> S-35-132 02/01/90 590 70 51 11 86 <br /> S-45-132 02/01/90 200 34 13 4 0 27 <br /> S-25-133 02/02/90 <20 <0 050 <0 050 <0 050 <0 050 <br /> S-45-133 02/02/90 <20 <0 050 <0 050 <0 050 <0 050 <br /> S-25-134 02/05/90 <20 0 26 <0 050 <0 050 075 <br /> S-35-134 02/05/90 190 63 25 43 34 <br /> S-45-134 02/05/90 <20 <0 050 <0 050 <0 050 <0 050 <br /> S-25-135 02/06/90 <20 <0 050 023 <0 050 060 <br /> S-35-135 02/06/90 <20 052 056 013 048 <br /> S-45-135 02/06/90 <20 0 39 070 <0 050 <0 050 <br /> S-20-B6 03/02/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S-40-B6 03/02/92 25 038 0 928 0 095 12 <br /> S-48-136 03/02/92 21 032 0 017 <0 0050 <0 0050 <br /> S-30-B7 03/03/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S•40-B7 03/03/92 <10 0 010 <0005 <0 005 0 007 <br /> S-50-B7 03/03/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S-15-B8 03/03/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S-35-B8 03/03/92 <10 0 017 <0 005 <0 005 0 009 <br /> i <br /> S-50-138* 03/03/92 21 0 13 0 014 0 019 0 059 <br /> S-20-B10 03/04/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S-35-B10 03/04/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> S-50-B10 03/04/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> See notes on page 3 of 3 <br /> i <br /> 35032-10 <br /> I <br />